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source: palm/trunk/SOURCE/advec_s_pw.f90 @ 4180

Last change on this file since 4180 was 4180, checked in by scharf, 5 years ago
removed comments in 'Former revisions' section that are older than 01.01.2019
Property svn:keywords set to `Id`
File size: 7.4 KB

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1	!> @file advec_s_pw.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of the PALM model system.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the
6	! terms of the GNU General Public License as published by the Free Software
7	! Foundation, either version 3 of the License, or (at your option) any later
8	! version.
9	!
10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13	!
14	! You should have received a copy of the GNU General Public License along with
15	! PALM. If not, see <http://www.gnu.org/licenses/>.
16	!
17	! Copyright 1997-2019 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: advec_s_pw.f90 4180 2019-08-21 14:37:54Z scharf $
27	! pointer attribute removed from scalar 3d-array for performance reasons
28	!
29	! 3665 2019-01-10 08:28:24Z raasch
30	! unused variables removed
31	!
32	! 3655 2019-01-07 16:51:22Z knoop
33	! nopointer option removed
34	!
35	!
36	! Description:
37	! ------------
38	!> Advection term for scalar variables using the Piacsek and Williams scheme
39	!> (form C3). Contrary to PW itself, for reasons of accuracy their scheme is
40	!> slightly modified as follows: the values of those scalars that are used for
41	!> the computation of the flux divergence are reduced by the value of the
42	!> relevant scalar at the location where the difference is computed (sk(k,j,i)).
43	!> NOTE: at the first grid point above the surface computation still takes place!
44	!------------------------------------------------------------------------------!
45	MODULE advec_s_pw_mod
46
47
48	PRIVATE
49	PUBLIC advec_s_pw
50
51	INTERFACE advec_s_pw
52	MODULE PROCEDURE advec_s_pw
53	MODULE PROCEDURE advec_s_pw_ij
54	END INTERFACE
55
56	CONTAINS
57
58
59	!------------------------------------------------------------------------------!
60	! Description:
61	! ------------
62	!> Call for all grid points
63	!------------------------------------------------------------------------------!
64	SUBROUTINE advec_s_pw( sk )
65
66	USE arrays_3d, &
67	ONLY: dd2zu, tend, u, u_stokes_zu, v, v_stokes_zu, w
68
69	USE control_parameters, &
70	ONLY: u_gtrans, v_gtrans
71
72	USE grid_variables, &
73	ONLY: ddx, ddy
74
75	USE indices, &
76	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt
77
78	USE kinds
79
80
81	IMPLICIT NONE
82
83	INTEGER(iwp) :: i !< grid index along x-direction
84	INTEGER(iwp) :: j !< grid index along y-direction
85	INTEGER(iwp) :: k !< grid index along z-direction
86
87	REAL(wp) :: gu !< local additional advective velocity
88	REAL(wp) :: gv !< local additional advective velocity
89
90	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: sk
91
92
93	DO i = nxl, nxr
94	DO j = nys, nyn
95	DO k = nzb+1, nzt
96
97	!
98	!-- Galilean transformation + Stokes drift velocity (ocean only)
99	gu = u_gtrans - u_stokes_zu(k)
100	gv = v_gtrans - v_stokes_zu(k)
101
102	tend(k,j,i) = tend(k,j,i) + &
103	( -0.5_wp * ( ( u(k,j,i+1) - gu ) * &
104	( sk(k,j,i+1) - sk(k,j,i) ) &
105	- ( u(k,j,i) - gu ) * &
106	( sk(k,j,i-1) - sk(k,j,i) ) &
107	) * ddx &
108	-0.5_wp * ( ( v(k,j+1,i) - gv ) * &
109	( sk(k,j+1,i) - sk(k,j,i) ) &
110	- ( v(k,j,i) - gv ) * &
111	( sk(k,j-1,i) - sk(k,j,i) ) &
112	) * ddy &
113	- ( w(k,j,i) * &
114	( sk(k+1,j,i) - sk(k,j,i) ) &
115	- w(k-1,j,i) * &
116	( sk(k-1,j,i) - sk(k,j,i) ) &
117	) * dd2zu(k) &
118	)
119	ENDDO
120	ENDDO
121	ENDDO
122
123	END SUBROUTINE advec_s_pw
124
125
126	!------------------------------------------------------------------------------!
127	! Description:
128	! ------------
129	!> Call for grid point i,j
130	!------------------------------------------------------------------------------!
131	SUBROUTINE advec_s_pw_ij( i, j, sk )
132
133	USE arrays_3d, &
134	ONLY: dd2zu, tend, u, u_stokes_zu, v, v_stokes_zu, w
135
136	USE control_parameters, &
137	ONLY: u_gtrans, v_gtrans
138
139	USE grid_variables, &
140	ONLY: ddx, ddy
141
142	USE indices, &
143	ONLY: nxlg, nxrg, nyng, nysg, nzb, nzt
144
145	USE kinds
146
147
148	IMPLICIT NONE
149
150	INTEGER(iwp) :: i !< grid index along x-direction
151	INTEGER(iwp) :: j !< grid index along y-direction
152	INTEGER(iwp) :: k !< grid index along z-direction
153
154	REAL(wp) :: gu !< local additional advective velocity
155	REAL(wp) :: gv !< local additional advective velocity
156
157	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: sk
158
159
160	DO k = nzb+1, nzt
161
162	!
163	!-- Galilean transformation + Stokes drift velocity (ocean only)
164	gu = u_gtrans - u_stokes_zu(k)
165	gv = v_gtrans - v_stokes_zu(k)
166
167	tend(k,j,i) = tend(k,j,i) + &
168	( -0.5_wp * ( ( u(k,j,i+1) - gu ) * &
169	( sk(k,j,i+1) - sk(k,j,i) ) &
170	- ( u(k,j,i) - gu ) * &
171	( sk(k,j,i-1) - sk(k,j,i) ) &
172	) * ddx &
173	-0.5_wp * ( ( v(k,j+1,i) - gv ) * &
174	( sk(k,j+1,i) - sk(k,j,i) ) &
175	- ( v(k,j,i) - gv ) * &
176	( sk(k,j-1,i) - sk(k,j,i) ) &
177	) * ddy &
178	- ( w(k,j,i) * &
179	( sk(k+1,j,i) - sk(k,j,i) ) &
180	- w(k-1,j,i) * &
181	( sk(k-1,j,i) - sk(k,j,i) ) &
182	) * dd2zu(k) &
183	)
184	ENDDO
185
186	END SUBROUTINE advec_s_pw_ij
187
188	END MODULE advec_s_pw_mod

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